gerry



2 SheetsSh t l.

. No Mo l) J H GERRY ELECTRIC SELF WINDING 0LO0K. A

Patented June 11, 1889.

(No Model.) 2 Sheets-Sheet 2.

' J. H. GERRY.

ELEGTRIG SELF WINDING GLOGK.

No. 405,089. Patented-June 11, 1889.

g m Whoa Nv PETERS Phulwlilhognpher. Wmlxinglnm Dpc.

UNITED STATES PATENT FFICE.

JAh/[ES Ii. GERRY, OF BROOKLYN, ASSIGNOR TO THE SELF \VINDTNG CLOCKCOMPANY, OF NElV YORK, N. Y.

ELECTRIC SELF-WINDING CLOCK.

SPECIFICATION forming part of Letters Patent No. 405,089, dated June 11,1889.

Application filed March 21, 1889.

To all whom it 71mg concern.-

Be it known that 1, JAMES II. GERRY, a citizen of the United States,residing in Brooklyn, in the county of Kings and State of New York, haveinvented certain new and useful Improvements in Self \Vinding Clocks, ofwhich the following is a specification.

The invention belongs to the class of clocks which wind themselvesthrough the action of IO an electro-magnet, and are known as stepby-step winders.

The invention will be readily understood by those skilled in the art byinspection of the accompanying drawings, in which I 5 Figure l is afront View of a clock-movement with the winding apparatus partly insection; and Fig. 2 is a side elevation of the same. Figs. 3 and 4tillustrate details.

Referring to the drawings, the movement A is included in the frame B, ofthe usual form, consisting of two sides held together by the posts 0. Tothe lower part of the frame is secured an additional frame A, whichcarries the greater part of the winding mechan ism. This consists,principally, of the elec tro-magnet M, the pole-pieces of which arecurved, as shown, and the armature in has its face also curved tocorrespond with the polepieces, and the armature turns upon the axis 0 mTo this axis is secured, nearly at one end of the armature, the sectorm, projecting on the opposite side from the armature m. The main shaft Sof the movement carries the box S, which contains the spring and theextra 3 5 wheel S preferably placed between the main wheel S of themovement and the springbox S. The armature m is normally held on oneside of the pole-pieces of the magnet and stands in the position shownin Fig. 3. \Vhen the magnet M is vitalized, the armature m is drawndownward, turning upon its axis m and at the end of its movement is inthe position shown in Fig. 1. The two springs s and s, carrying at theirends circuit-closing points 8 are fastened to the insulating-block I, so

that they are insulated from each other, and

these are connected with the opposite poles of the battery by means ofthe wires n it.

These two springs s and s are normally held apart from each other, asshown both in Figs.

Serial No. 304,111. (No model.)

1 and 3; but once each minute they are allowed to approach, so that thecircuit-closing points .9 touch, when the magnet is vitahzed and thearmature changes from the position shown in Fig. 3 to the position shownin Fig. 1. The springs s and s are held in their positionsby means ofthe pins 1) p, which are fixed upon the segment D of a lever, the upperend of which (1 passes over the teeth of the extra wheel S The windingis effected one tooth at a time through the dog D which is attached tothe armature m, acting upon the spring-wheel S, while the dog D preventsthe return of the spring-wheel S, when the dog D is released. Theoperation is as follows, the parts being in the position shown in Fig.3: The lower spring 8 rests upon the top of the sector m, and thecircuit-closing points 3 are held apart by the pins 19. It will benoticed that the upper end (Z of the dog of the lever D is nearly at theend of a tooth upon the wheel S This wheel being attached to the mainshaft of the movement is being carried forward thereby, and presentlythe end of the lever (1 will fall upon the next tooth. \Vhen that takesplace, it will be seen that the circuit-closing points 5 will be broughttogether, because the upper spring 3 will be allowed to drop toward thespring 3, and as the latter rests upon the edge of the sector m itcannot follow the pin 1), which supports it. As soon as the circuitclosing points .9 are brought together the magnet M is vitalized, thearmature m turns into the position shown in Fig. 1, the dog D pushes 8 5forward the spring S one tooth, while the dog D also falls over onetooth. As soon as the armature m has reached the position shown in Fig.1 the spring 5 drops down against the end of the sector m, as shown, andthe cir- 9o cuit-c1osing points .9 are separated. The two springs s and5 each rest upon the pins 19 p, and the continued going of the clockcarries the end (Z of the lever D out toward the end of a tooth upon thewheel S and presently raises the two springs s and 5 far enough to allowthe sector m to pass under the spring 8. As soon as this is done theslight recoil of the mainspring upon the dog D throws the armature backinto the position shown in Fig. 3, and this is assisted by the curvedspring (2 attached to the armature. The further recoil of the mainspringis stopped by the dog D, which always falls a little beyond the toothwhen the wheel S is carried forward by the dog D in the process ofwinding. W hen the armature m moves back from the position in Fig. l. tothe position in Fig. 33, it carries the dog D with it over one tooth ofthe wheel, and it is then ready for the next operation, as has beendescribed.

The advantages of the invention are, the operation is noiseless, thewinding is ei'tected without shock to the train, the electric currentpasses through no part of the movement, and the current is broken theinstant the work is accomplished.

I claim as my invention 1. The combination of a clock-train, amainspring for actuating the same, an electro-niagnet, an armaturetherefor, said armature be ing arranged to turn upon an axis parallelwith the pivots oi the eloclc-traii'i, a lever attached to saidarinature and engaging with the wheel connected with said inainspring,the segment or lever m the springs s and s, the extra wheel upon themain shaft of said train, and the lever D, operated by said wheel 5.

2. The (JOlllbil'lZtillOll, with the clock-train having a niainspringfor driving the same, of the electro-magnet M, having curved polepieces,the armature m, with its face curved to correspond with saidpole-pieces,the sector m, the springs and s, having the circuit closingpoints s, the wheel S upon the main shaft of the clock-train, the leverl) engaging therewith, and the dogs If) and 1) The combination, with theclock-train having a mainspring for driving the same, oi theelectro-inagnet M, having curved polepieees, the armature m, with itsface curved to correspond with said pole-pieces, the sector m, thesprings s and s, insulated from each other and from the train, havingthe circult-closing points x, the wheel S upon the main shaft of theclock-train, the lover 1) engaging therewith, the pins 1) p, whichcontrol the positions of the springs s and s, and the dogs I) and D Intestimony whereof I have hereunto subscribed my name this 20th day ofMarch, A. D. 1880.

JAMES I l. G ERR'Y.

\V itnesses:

'DANL. W. Economic, CAROLINE E. DAvInsoN.

